2287128490 has 16 divisors (see below), whose sum is σ = 4358998152. Its totient is φ = 861036544.

The previous prime is 2287128457. The next prime is 2287128491. The reversal of 2287128490 is 948217822.

It can be written as a sum of positive squares in 4 ways, for example, as 2153795281 + 133333209 = 46409^2 + 11547^2 .

It is not an unprimeable number, because it can be changed into a prime (2287128491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6726679 + ... + 6727018.

Almost surely, 2^2287128490 is an apocalyptic number.

2287128490 is a deficient number, since it is larger than the sum of its proper divisors (2071869662).

2287128490 is a wasteful number, since it uses less digits than its factorization.

2287128490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13453721.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 2287128490 is about 47823.9321888111. The cubic root of 2287128490 is about 1317.5391267889.

The spelling of 2287128490 in words is "two billion, two hundred eighty-seven million, one hundred twenty-eight thousand, four hundred ninety".